Backend Engineer

• Design, develop, test, and maintain backend services supporting Binance Pay and Card products
• Build scalable APIs and microservices for payment processing, transaction management, merchant services, and related financial workflows
• Participate in developing distributed systems handling high-volume and latency-sensitive transactions
• Work with databases, caching systems, message queues, and infrastructure components to improve performance and reliability
• Implement transaction workflows with retries, idempotency, concurrency, and failure handling
• Assist with troubleshooting production issues using logs, metrics, tracing, and root-cause analysis
• Write clean, maintainable, well-tested code and participate in code reviews
• Collaborate with product and engineering teams to translate business requirements into technical solutions
• Contribute to system reliability, observability, security, and engineering practices
• Collaborate with backend engineers, product managers, QA engineers, and cross-functional teams to build reliable, secure, scalable payment services
• Work on backend systems powering crypto and fiat payment experiences for users and merchants globally

Backend Engineer, Pay & Card

• Own end-to-end data extraction workflows across complex websites
• Ensure complete coverage, accuracy, and reliable delivery of structured datasets
• Use tools and custom workflows to accelerate data collection, validation, and task execution
• Extract data from dynamic and interactive web sources, including JavaScript-rendered content
• Adapt scraping approaches to changing site behavior
• Enforce data quality through validation checks, cross-source consistency controls, formatting specifications, and systematic verification
• Scale scraping operations for large datasets using efficient batching or parallelization
• Monitor failures and maintain stability against minor site structure changes
• Apply web scraping, data extraction, and data processing expertise to Tendem project workflows

Senior Python Data Scraping Engineer – Freelance

• Own end-to-end data extraction workflows across complex websites
• Ensure complete coverage, accuracy, and reliable delivery of structured datasets
• Use available tools and custom workflows to accelerate data collection, validation, and task execution
• Extract data reliably from dynamic and interactive web sources, including JavaScript-rendered content
• Adapt scraping approaches to changing site behavior
• Enforce data quality through validation checks, cross-source consistency controls, formatting specifications, and systematic verification
• Scale scraping operations for large datasets using efficient batching or parallelization
• Monitor failures and maintain stability against minor site structure changes
• Use tools such as Apify, OpenRouter, and other technologies alongside technical expertise

• Design, develop, and maintain scalable applications using modern JavaScript frameworks such as Angular and Node.js
• Contribute across the full Software Development Life Cycle, including design, development, testing, deployment, and support
• Build and manage high-volume, real-time data pipelines using Kafka and NiFi
• Develop and implement business process workflows using BPMN tools like Camunda or similar platforms
• Enable and support cloud-native application deployment using containerization and orchestration platforms
• Work with relational databases including MS SQL Server, MySQL, and PostgreSQL, as well as NoSQL databases
• Collaborate with cross-functional teams to design robust, scalable, and efficient system architectures
• Contribute to telecom-domain solutions
• Integrate applications with ITSM tools and platforms
• Work effectively with global teams across different time zones

Java Developer

• Design realistic and challenging coding tasks involving feature implementation and bug fixes.
• Create tasks that reflect authentic backend engineering workflows and practical software development challenges.
• Develop deterministic verifiers that accept reasonable valid solutions and reject incorrect implementations.
• Build and validate solutions using backend programming languages such as Java, Node.js, Go, Rust, TypeScript, Python, or C++.
• Develop tasks involving scalable services, APIs, debugging, performance optimization, and automated testing.
• Review code quality, maintainability, correctness, and adherence to technical requirements.
• Design evaluation criteria that distinguish robust solutions from superficially plausible implementations.
• Incorporate security considerations into tasks and verifiers where applicable.
• Document assumptions, expected behavior, edge cases, and validation requirements.
• Apply independent technical judgment throughout the task development and review process.

Software Engineer – Backend, AI Code Evaluation

• Lead the design, implementation and operation of enterprise database and data platforms across cloud and on-premises environments
• Ensure the availability, performance, security and reliability of production database services
• Establish and maintain technical standards, best practices and operational processes
• Drive automation, DevOps and modern engineering practices
• Plan workloads, projects and resources for operational and strategic priorities
• Contribute to technology roadmaps and align database initiatives with organisational objectives
• Lead, coach and develop the Database Engineering team
• Set goals, KPIs and development plans while supporting performance management
• Recruit, develop and retain talent with People and Culture
• Build a collaborative, inclusive and high-performing team culture
• Manage the departmental budget where applicable
• Promote continuous improvement, accountability and knowledge sharing
• Report to the Head of Infrastructure

Database Engineering Manager

• Design and build core infrastructure connecting services across Canva's backend engineering organization
• Lead a major migration of backend service communication
• Collaborate with partner engineering teams and leaders
• Drive support for additional programming languages and frameworks
• Own reliability, performance, and correctness of systems on the critical path for the engineering organization
• Mentor engineers and raise the team's technical bar
• Build and run infrastructure for service communication, traffic routing and security, and multi-language development across Canva's platform

Staff Software Engineer – API Platform

• Design and build core infrastructure connecting services across Canva's backend engineering organization
• Lead a major migration of backend service communication
• Collaborate with partner engineering teams and leaders
• Drive support for additional languages and frameworks
• Own reliability, performance, and correctness of critical-path systems
• Mentor engineers and raise the team's technical bar
• Build and run infrastructure for service communication, traffic routing, security, and language flexibility